Am Mittwoch 24 März 2010 schrieb Jan Depner: > > > > I suggest adding some printk()s to the driver and see what it actually > > does and which values it passes around. Most probably there is more > > differences in the data format, and descriptors and/or message blocks > > have different meanings for this hardware model. > > > > I did as suggested and got back reasonable appearing numbers for > rate, use_packsize, and period_frames of 44100, 36, and 256 respectively > but am not sure how to relate this to my interface. I heard the US-1641 uses bulk and/or iso packets, while US-122L uses iso only. so snd_usb_us122l would need some deep tweaking. also all the incantation stuff looks propably different. > Is there some > documentation somewhere that would explain the output of lsusb -v with > respect to variable names in us122l.c. erm, no. there are the interface and endpoint numbers. > My problem here is that I don't > know what would actually be reasonable for this interface nor how to > find out. usbsnoop and/or the developers at http://usbaudio.com. > > > Many thanks for your help with this. Karsten had asked me to get > back with him if I got one of these but my email to him must have gone > to the spam filter as I haven't heard anything. no spam filters, just work and short hollidays. looking back at developing snd_usb_us122l, i'm unsure if I spent my time wisely: the actual hardware one can buy now doesn't talk to the driver anymore. and i'm busy caring for real life, which i've been omitting a tad too much that time. If in doubt, don't bother hacking on the tascam, enjoy spring instead! regards, Karsten _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
